St. Joseph Academy is a traditional Roman Catholic K–12 school located in San Marcos, CA. Its stated mission is "to transform human society through the most effective means possible, namely through training the youth in faith, reason, and virtue". The school is operated independent of the Roman Catholic Diocese of San Diego and offers a complete K-12 education. St. Joseph Academy has been named by the Catholic High School Honor Roll as one of the top 50 Catholic High Schools in the United States for three consecutive years and carries a 99% college matriculation rate. The school is accredited by the Western Association of Schools and Colleges accredited school and formally approved by the Diocese of San Diego.